diff --git a/Code/Mantid/MantidQt/CustomInterfaces/inc/MantidQtCustomInterfaces/MultiDatasetFit.h b/Code/Mantid/MantidQt/CustomInterfaces/inc/MantidQtCustomInterfaces/MultiDatasetFit.h
index e7bb2158cd7e..bc4f63f26f70 100644
--- a/Code/Mantid/MantidQt/CustomInterfaces/inc/MantidQtCustomInterfaces/MultiDatasetFit.h
+++ b/Code/Mantid/MantidQt/CustomInterfaces/inc/MantidQtCustomInterfaces/MultiDatasetFit.h
@@ -9,6 +9,8 @@
 #include "ui_AddWorkspace.h"
 #include "ui_EditLocalParameterDialog.h"
 
+#include <QStyledItemDelegate>
+
 #include <boost/shared_ptr.hpp>
 #include <QMap>
 #include <vector>
@@ -228,6 +230,36 @@ private slots:
   int m_currentIndex;
 };
 
+/*==========================================================================================*/
+class LocalParameterEditor: public QWidget
+{
+  Q_OBJECT
+public:
+  LocalParameterEditor(QWidget *parent = NULL);
+  ~LocalParameterEditor();
+signals:
+  void setAllValues(double);
+private slots:
+  void buttonPressed();
+private:
+  QLineEdit* m_editor;
+};
+
+class LocalParameterItemDelegate: public QStyledItemDelegate
+{
+  Q_OBJECT
+public:
+  LocalParameterItemDelegate(QObject *parent = NULL);
+  QWidget* createEditor(QWidget * parent, const QStyleOptionViewItem & option, const QModelIndex & index) const;
+  void setEditorData(QWidget * editor, const QModelIndex & index) const;
+  void setModelData(QWidget * editor, QAbstractItemModel * model, const QModelIndex & index) const;
+signals:
+  void setAllValues(double);
+private:
+  bool eventFilter(QObject * obj, QEvent * ev);
+  mutable LocalParameterEditor* m_currentEditor;
+};
+
 /*==========================================================================================*/
 /**
   * A dialog for displaying and editing values of local parameters.
@@ -238,9 +270,8 @@ class EditLocalParameterDialog: public QDialog
 public:
   EditLocalParameterDialog(MultiDatasetFit *parent, const QString &parName);
 private slots:
-  //void accept();
-  //void reject();
   void valueChanged(int,int);
+  void setAllValues(double);
 private:
   MultiDatasetFit *owner() const {return static_cast<MultiDatasetFit*>(parent());}
   Ui::EditLocalParameterDialog m_uiForm;
diff --git a/Code/Mantid/MantidQt/CustomInterfaces/src/MultiDatasetFit.cpp b/Code/Mantid/MantidQt/CustomInterfaces/src/MultiDatasetFit.cpp
index d2f78f8aea27..29d32eee65a1 100644
--- a/Code/Mantid/MantidQt/CustomInterfaces/src/MultiDatasetFit.cpp
+++ b/Code/Mantid/MantidQt/CustomInterfaces/src/MultiDatasetFit.cpp
@@ -652,6 +652,74 @@ void PlotController::updateRange(int index)
 /*                               EditLocalParameterDialog                                   */
 /*==========================================================================================*/
 
+LocalParameterEditor::LocalParameterEditor(QWidget *parent):QWidget(parent)
+{
+  auto layout = new QHBoxLayout(this);
+  layout->setMargin(0);
+  layout->setSpacing(0);
+  layout->setContentsMargins(0,0,0,0);
+
+  m_editor = new QLineEdit(parent);
+  m_editor->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Expanding);
+  auto button = new QPushButton("All");
+  button->setSizePolicy(QSizePolicy::Minimum,QSizePolicy::Expanding);
+  this->setFocusPolicy(Qt::NoFocus);
+  layout->addWidget(m_editor);
+  layout->addWidget(button);
+  layout->setStretch(0,1);
+  layout->setStretch(1,0);
+  this->setFocusProxy(m_editor);
+  this->setFocusPolicy(Qt::StrongFocus);
+  connect(button,SIGNAL(clicked()),this,SLOT(buttonPressed()));
+}
+
+LocalParameterEditor::~LocalParameterEditor()
+{
+}
+
+void LocalParameterEditor::buttonPressed()
+{
+  double value = m_editor->text().toDouble();
+  emit setAllValues(value);
+}
+
+/*==========================================================================================*/
+LocalParameterItemDelegate::LocalParameterItemDelegate(QObject *parent):
+  QStyledItemDelegate(parent),
+  m_currentEditor(NULL)
+{
+}
+
+QWidget* LocalParameterItemDelegate::createEditor(QWidget * parent, const QStyleOptionViewItem & option, const QModelIndex & index) const
+{
+  m_currentEditor = new LocalParameterEditor(parent);
+  connect(m_currentEditor,SIGNAL(setAllValues(double)),this,SIGNAL(setAllValues(double)));
+  m_currentEditor->installEventFilter(const_cast<LocalParameterItemDelegate*>(this));
+ return m_currentEditor;
+}
+
+void LocalParameterItemDelegate::setEditorData(QWidget * editor, const QModelIndex & index) const
+{
+  QStyledItemDelegate::setEditorData(editor->layout()->itemAt(0)->widget(), index);
+}
+
+void LocalParameterItemDelegate::setModelData(QWidget * editor, QAbstractItemModel * model, const QModelIndex & index) const
+{
+  QStyledItemDelegate::setModelData(editor->layout()->itemAt(0)->widget(), model, index);
+}
+
+bool LocalParameterItemDelegate::eventFilter(QObject * obj, QEvent * ev)
+{
+  if ( ev->type() == QEvent::WindowDeactivate )
+  {
+    emit commitData(m_currentEditor);
+    return true;
+  }
+  return QStyledItemDelegate::eventFilter(obj,ev);
+}
+
+/*==========================================================================================*/
+
 EditLocalParameterDialog::EditLocalParameterDialog(MultiDatasetFit *parent, const QString &parName):
   QDialog(parent),m_parName(parName)
 {
@@ -671,6 +739,9 @@ EditLocalParameterDialog::EditLocalParameterDialog(MultiDatasetFit *parent, cons
     cell = new QTableWidgetItem( QString::number(multifit->getLocalParameterValue(parName,i)) );
     m_uiForm.tableWidget->setItem( i, 1, cell );
   }
+  auto deleg = new LocalParameterItemDelegate(this);
+  m_uiForm.tableWidget->setItemDelegateForColumn(1,deleg);
+  connect(deleg,SIGNAL(setAllValues(double)),this,SLOT(setAllValues(double)));
 }
 
 /**
@@ -696,6 +767,16 @@ void EditLocalParameterDialog::valueChanged(int row, int col)
   }
 }
 
+void EditLocalParameterDialog::setAllValues(double value)
+{
+  int n = owner()->getNumberOfSpectra();
+  for(int i = 0; i < n; ++i)
+  {
+    owner()->setLocalParameterValue(m_parName,i,value);
+    m_uiForm.tableWidget->item(i,1)->setText( QString::number(value) );
+  }
+}
+
 /*==========================================================================================*/
 /*                                    MultiDatasetFit                                       */
 /*==========================================================================================*/